Following the Perl
Cookbook (by Tom Christiansen and Nathan Torkington, published by
O'Reilly) spirit, the PLEAC
Project aims to gather fans of programming, in order to implement
the solutions in other programming languages.

In this document, you'll find an implementation of the Solutions of the
Perl Cookbook in the Common Lisp
language.

Various submissions rely on third party http://cliki.net/ASDF packages (e.g. cl-ppcre,
soundex, etc) and specific helper utility functions (WHEN-LET, CHOMP, etc). Used ASDF
packages are assumed to be installable via http://cliki.net/ASDF-INSTALL and helper
utilities are available in the appendix.
Most of the demonstrated solutions are free from low-level Common Lisp optimizations
(no type declarations, missing tail-call-optimizations, etc) for the sake of simplicity.
While this doesn't mean such programs would perform poorly, in certain situations
particular optimizations might be necessary.
It should also be noted that, most of the scripts are given in plain function form.
For how to execute these functions using a script file, please consult to your
implementation's http://en.wikipedia.org/wiki/Shebang_(Unix) documentation.
(You may also be interested in trivial-shell ASDF package for a lightweight shell
interaction layer.)